How about when you select a building, the requirements show on the left side like:
Methane: 300.0K (+2.0/s) (-1.0/s)
I think it would be better to visualize the requirements. The right side could be used to explain what it does, with a little bit of text.
I'm having an issue here. my gold says i have 1.09e30, but when i spend on better heads level 120 (119.23e27) it says I have 975.78e27 and the game acts like I have that amount.